In HTML viewers, the page appears to load, but instead of seeing the map, a red X appears.
The Map Service used in the HTML viewer has the Server Output URL Location pointing to a path that is not resolvable from the client. The red X in the browser window is an indication that the path to the image is incorrect.
Solution or Workaround
In either ArcIMS Manager or Stand-alone Administrator, open the property sheet for the service being used by this page.
Change the value of the Server Output URL location to be correct from the clients perspective.
On Apache Web servers, depending on the set up of the output virtual directory, it may be necessary to place an ending '/', for example: